194491384968 has 128 divisors (see below), whose sum is σ = 524400220800. Its totient is φ = 59886022656.

The previous prime is 194491384963. The next prime is 194491384973. The reversal of 194491384968 is 869483194491.

It is an interprime number because it is at equal distance from previous prime (194491384963) and next prime (194491384973).

It is a super-2 number, since 2×194491384968² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194491384899 and 194491384908.

It is not an unprimeable number, because it can be changed into a prime (194491384963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15712830 + ... + 15725202.

It is an arithmetic number, because the mean of its divisors is an integer number (4096876725).

Almost surely, 2^194491384968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194491384968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262200110400).

194491384968 is an abundant number, since it is smaller than the sum of its proper divisors (329908835832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194491384968 is a wasteful number, since it uses less digits than its factorization.

194491384968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13111 (or 13107 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 66.

The spelling of 194491384968 in words is "one hundred ninety-four billion, four hundred ninety-one million, three hundred eighty-four thousand, nine hundred sixty-eight".